Doubts Persist About Sony
After Recent Stock Rally

Shares of battered consumer-electronics manufacturer Sony have started bouncing back after a dramatic slide. But it might still be too soon to bet on a sustained rally.

Sony shares hit an all-time high of 13,490 yen ($113.32) on July 21, but since then have mostly just plummeted. Over the space of three months, the stock fell by nearly half, bottoming out at 7,230 yen on Oct. 30. That was a humbling blow to a company not only often...